player,gui: show realtime audio bitrate

[coveralls]

Pull Request Test Coverage Report for Build 9021331274

Details

• 27 of 40 (67.5%) changed or added relevant lines in 2 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.005%) to 55.236%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
feeluown/player/mpvplayer.py	7	8	87.5%
feeluown/gui/components/song_tag.py	20	32	62.5%
<!--	Total:	27	40	67.5%	-->

Files with Coverage Reduction	New Missed Lines	%
feeluown/library/library.py	3	71.49%
<!--	Total:	3		-->

Totals
Change from base Build 8988691470:	-0.005%
Covered Lines:	9784
Relevant Lines:	17713

---

💛 - Coveralls